[510×(1-96%y)-(400-y)]×(1-10%)

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/10/05 22:30:36

[510×(1-96%y)-(400-y)]×(1-10%)
=[510×0.04y-(400-y)]×0.9
=[20.4y-400+y]×0.9
=(21.4y-400)×0.9
=19.26y-360

matlab中y(:,y(:,1: 1- 6y+y² for(y=1;y for (y=1;y 在y=1,y=2,y=3中,_________方程y=10-4y的解 [(-x-y)(-x+y)-(x+y)^2-x(y-y^2)}÷1/2y 已知2x+y=10,求代数式((x+y)的平方-(x-y)的平方-2y(x-1/2y))/4y的值解方程：3y^2-(2y+1)(y-1)=(y-5)(y+1) 解方程3y^2-(2y+1)(y-2)=(y-5)(y-1) 10(1+y)(1+2y)=14.95解x 25(x-y)的平方+10(y-x)+1因式分解求y=(2x+1)^10导数y’